[compiler] Delay allocation of code-embedded heap numbers.

src/compiler/ia32/code-generator-ia32.cc

Index: src/compiler/ia32/code-generator-ia32.cc
diff --git a/src/compiler/ia32/code-generator-ia32.cc b/src/compiler/ia32/code-generator-ia32.cc
index 490e26b95050f4684f72dee48d5785bedc5cf49d..807d32d350408d3a9fdf6d86a342a38e85ad6a70 100644
--- a/src/compiler/ia32/code-generator-ia32.cc
+++ b/src/compiler/ia32/code-generator-ia32.cc
@@ -74,11 +74,9 @@ class IA32OperandConverter : public InstructionOperandConverter {
       case Constant::kInt32:
         return Immediate(constant.ToInt32());
       case Constant::kFloat32:
-        return Immediate(
-            isolate()->factory()->NewNumber(constant.ToFloat32(), TENURED));
+        return Immediate::EmbeddedNumber(constant.ToFloat32());
       case Constant::kFloat64:
-        return Immediate(
-            isolate()->factory()->NewNumber(constant.ToFloat64(), TENURED));
+        return Immediate::EmbeddedNumber(constant.ToFloat64());
       case Constant::kExternalReference:
         return Immediate(constant.ToExternalReference());
       case Constant::kHeapObject: